The only thing I'd add is that I assume the behringer tuner is made out of plastic like their other pedals..... if it is, it might be a little fragile for stage use? I'd probably break it...

I reckon the TU-2 would survive a nuclear blast - are you actually going to gig with it? I don't think you really save money in buying cheaper stuff for live use... it generally bites you in the ass... which costs you more than the $$$'s...